Simplex pushbutton lock prepared to accept Sargent lock core allowing convenient key bypass for commericial installations. The Sargent interchangable cores are available as a separate item. UNICAN 1000 Series locksets are the best choice for limiting access to high-traffic, security-sensitive areas in commercial, institutional, and industrial buildings. Ideal for locations with a high personnel turnover rate, such as data processing centers, employee entrances, hospitals and R&D labs.